Electronic pen



FIG. 1 is a front perspective view of a first embodiment of an electronic pen showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a left view thereof; and,

FIG. 8 is a back perspective view thereof.

The oblique line shading in the drawings depicts a transparent surface. 

CLAIM The ornamental design for an electronic pen, as shown and described. 